Okay, I'm here to tell you that it is safe to see Treasure Planet. I wasn't certain way back when I saw the initial trailers, but I took my kids the other day and they just ate it up. And it was cool for us adults, too. The computer animation is simply gorgeous at every turn, but especially when showing us scenes of stardocks and ancient galleons sailing through space (there is no wind in space, but so what, it still looked cool). It had a lot of action and last-second escapes, but still nothing that caused my kids to hide under the seat (we're talking age 6 here). The characters are fun to watch, especially the stiff-upper-lip proper British ship's captain (who happens to be a cat woman) and Silver the cyborg, with his multi-purpose robotic arm that can go from slicking veggies to brandishing a bazooka at a whim (with the voice actor obviously channeling Robert Newton, Arrrr, matey).
While there is really nothing that is going to make this movie an all-time classic, it is still impressive to look at and genuinely fun. If you are looking for a flick that you and your kids can watch together, this is the one. Plus you can use it to motivate them to read Robert Louis Stevenson!
On a side note, they showed a trailer for the next Disney film: Jungle Book 2, the further adventures of Mowgli and Baloo. I don't know about the rest of you, but I just hate it when they make a sequel to a classic Disney yarn that just doesn't need it, solely for the purpose of making more money. the Peter Pan sequel, while not terrible in itself, has forever dampened my enthusiasm for what was once an incredible Disney film. The additonal Little Mermaid and Aladdin films weren't needed either. When will Disney just stop the insanity?